Alarm clock



FIG. 1 is a front view of the device.

FIG. 2 is a back view of the device.

FIG. 3 is a left side view of the device.

FIG. 4 is a right side view of the device.

FIG. 5 is a top view of the device.

FIG. 6 is a bottom view of the device; and,

FIG. 7 is a perspective view of the device.

The broken lines showing indicia in FIGS. 1 and 7 are for illustrative purposes only and do not form part of the claimed design. 

The ornamental design for an alarm clock, as shown and described. 